Beater attachment for an electric mixer



FIG. 1 is a perspective view of a beater attachement for an electric mixer according to the design;

FIG. 2 is a front elevation view thereof, a back elevation view being identical thereto;

FIG. 3 is a right side elevation view thereof, a left side elevation view being identical thereto;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The portions of the article shown in broken line form no part of the claimed design. 

CLAIM The ornamental design for a beater attachment for an electric mixer, as shown and described. 